Shadow Warrior is the second first person shooter which was based on Ken Silverman's Build Engine and released by 3D Realms. The UK version of the game was slightly altered in order to be acceptable for the Biritsh penal law.

Censored Weapon:In the uncensored version you can use so-called "Shuriken" (=throwing stars) as weapons; in the UK version they were exchanged with darts.